Alert archive / Michigan / Tornado Warnings in 2021

Tornado Warning 14, NWS Northern Indiana

June 26, 2021Cass County, Saint Joseph County, Michigan

NWS Northern Indiana issued this tornado warning at Jun 26, 2021, 4:59 PM EDT for Cass County, Saint Joseph County, Michigan. It was in force for 17 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jun 26, 2021, 4:59 PM EDT (20:59 UTC)
Expired
Jun 26, 2021, 5:16 PM EDT
In force
17 min
Issued by
NWS Northern Indiana
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

Counties Cass County, MI, Saint Joseph County, MI

The radar

The Northern Indiana radar (KIWX), 59 km from the middle of the area, began a volume at 21:01 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jun 26, 1:05 PM EDTTornado WatchSPC9 hr

The nearest sounding before it

Detroit, MI (KDTX), launched 12:00Z, 9.0 hours before the alert went out and 214 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Detroit, MI at 12:00Z on 2021-06-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 492 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Detroit, MI at 12:00Z on 2021-06-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 90 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
492 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
493 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
90 m²/s²
0-3 km storm-relative helicity
139 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.5

Open this sounding in Storm Lab

The text

As transmitted.

371 
WFUS53 KIWX 262059
TORIWX
MIC027-149-262130-
/O.NEW.KIWX.TO.W.0014.210626T2059Z-210626T2130Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Northern Indiana
459 PM EDT Sat Jun 26 2021

The National Weather Service in Northern Indiana has issued a

* Tornado Warning for...
  East central Cass County in southwestern Michigan...
  West central St. Joseph County in southwestern Michigan...

* Until 530 PM EDT.
    
* At 459 PM EDT, a severe thunderstorm capable of producing a tornado
  was located 9 miles west of Constantine, or 10 miles northeast of
  Simonton Lake, moving northeast at 25 mph.

  HAZARD...Tornado.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* This dangerous storm will be near...
  Three Rivers around 525 PM EDT.

Other locations impacted by this tornadic thunderstorm include Clear
Lake, Jones, Corey Lake and Shavehead Lake.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If in a mobile home, a
vehicle or outdoors, move to the closest substantial shelter and
protect yourself from flying debris.

&&

LAT...LON 4182 8585 4188 8589 4201 8569 4189 8557
TIME...MOT...LOC 2059Z 230DEG 23KT 4186 8584 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

JBALL
2 follow-up statements
064 
WWUS53 KIWX 262109
SVSIWX

Severe Weather Statement
National Weather Service Northern Indiana
509 PM EDT Sat Jun 26 2021

MIC027-262118-
/O.CAN.KIWX.TO.W.0014.000000T0000Z-210626T2130Z/
Cass MI-
509 PM EDT Sat Jun 26 2021

...THE TORNADO WARNING FOR EAST CENTRAL CASS COUNTY IS CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved out 
of the warned area. Therefore, the warning has been cancelled.

A Tornado Watch remains in effect until 800 PM EDT for southwestern
Michigan.

LAT...LON 4201 8569 4191 8560 4189 8576 4196 8576
TIME...MOT...LOC 2108Z 233DEG 37KT 4193 8572 

$$

MIC149-262130-
/O.CON.KIWX.TO.W.0014.000000T0000Z-210626T2130Z/
St. Joseph MI-
509 PM EDT Sat Jun 26 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 530 PM EDT FOR WEST
CENTRAL ST. JOSEPH COUNTY...
    
At 508 PM EDT, a severe thunderstorm capable of producing a tornado
was located near Three Rivers, moving northeast at 40 mph.

HAZARD...Tornado.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

This dangerous storm will be near...
  Three Rivers around 515 PM EDT.

Other locations impacted by this tornadic thunderstorm include Clear
Lake and Corey Lake.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 4201 8569 4191 8560 4189 8576 4196 8576
TIME...MOT...LOC 2108Z 233DEG 37KT 4193 8572 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

JBALL
472 
WWUS53 KIWX 262116
SVSIWX

Severe Weather Statement
National Weather Service Northern Indiana
516 PM EDT Sat Jun 26 2021

MIC149-262126-
/O.CAN.KIWX.TO.W.0014.000000T0000Z-210626T2130Z/
St. Joseph MI-
516 PM EDT Sat Jun 26 2021

...THE TORNADO WARNING FOR WEST CENTRAL ST. JOSEPH COUNTY IS
CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning has been cancelled.

A Tornado Watch remains in effect until 800 PM EDT for southwestern
Michigan.

LAT...LON 4201 8569 4191 8560 4189 8576 4196 8576
TIME...MOT...LOC 2114Z 230DEG 23KT 4197 8564 

$$

JBALL

The office that day

Everything else NWS Northern Indiana issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 26, 2:29 AM EDTSpecial Weather StatementIWXSaint Joseph61 min
Jun 26, 2:55 AM EDTSpecial Weather StatementIWXSaint Joseph65 min
Jun 26, 3:28 AM EDTSpecial Weather StatementIWXSaint Joseph32 min
Jun 26, 10:35 AM EDTRiver Flood WarningIWXBerrien70 hr
Jun 26, 3:16 PM EDTSevere Thunderstorm WarningIWXBerrien32 min
Jun 26, 3:30 PM EDTSpecial Weather StatementIWXBerrien30 min
Jun 26, 4:16 PM EDTSpecial Weather StatementIWXCass29 min
Jun 26, 4:25 PM EDTTornado WarningIWXCass25 min
Jun 26, 4:38 PM EDTSevere Thunderstorm WarningIWXBerrien24 min
Jun 26, 5:07 PM EDTSpecial Weather StatementIWXCass23 min
Jun 26, 7:16 PM EDTSevere Thunderstorm WarningIWXBerrien44 min
Jun 26, 7:53 PM EDTSevere Thunderstorm WarningIWXCass, Saint Joseph52 min

Nearby

Tornado Warnings in Michigan, 2021Every tornado warning in 2021Tornadoes in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.